The way Bill C-2 works vis-à-vis Bill C-11 is that Bill C-11 has received royal assent but has not been proclaimed in force. Bill C-2 amends Bill C-11. Assuming Bill C-2 is brought into force first, then Bill C-11 will come into force with those Bill C-2 amendments having been made to it.
On May 4th, 2006. See this statement in context.